The first attempt at launching Artemis 1 came to a halt this past Monday when engineers were unable to get the 4 main engines cooled to the necessary negative 420ºF.
The engineers have been hard at work this week trying to solve this issue and a solution is believed to have been found. A couple other issues that were uncovered during the last countdown have also been addressed.
The next attempt is to come this afternoon at 2:17PM. The launch window will be open for 2 hours. Weather is expected to be 60-80% favorable during the launch window.
You can stream the launch live on NASA TV.
For more information on the mission check out this article.